Adjustable dosing fluid dispenser for flexible fluid packages

ABSTRACT

A device for dispensing fluid from a fluid container, the device capable of being set to different discrete and repeatable/equal dispensing amounts, depending on the amount of fluid required to be dispensed by the user for various applications and uses. The device may also be set to an “off” or “closed” position to prevent accidental dispensing of fluid when not in use. The device is preferably configured to be affixed to the outer surface of a fluid container, which fluid container is preferably a flexible bag or pouch.

BACKGROUND OF THE INVENTION Field of the Invention

This invention relates generally to dispensing devices and packages.More specifically, the present invention relates to metering devicesthat can controllably dispense fluid media from a source of fluid media.

Description of the Background

Various types of fluid material and media are employed for differentpurposes through commerce and industry. For example, there are variousproducts in the personal care, home care, air care, Medical,transportation, and food industries that require some type of dispensingof a fluid material from a source of such material. When this materialis sold in commerce, it must be contained and stored in some type ofcontainer. When that product is used, it must be dispensed from itsstorage container to a location for use.

In the prior art, there are many different types of dispensers fordelivering fluid material. For example, a flexible container body with anozzle tip is commonly provided for such a purpose. An application ofsuch use is for the dispensing of ketchup where the container body issqueezed by the user to urge the fluid material out from the nozzle tipto a desired location. The amount of fluid delivered is determined bythe how much the user squeezes the container body. However, this yieldserratic results where more or less fluid material is delivered on eachsuccessive squeeze of the container body. Also, the container must beheld upright when not in use to avoid leakage because no valves areemployed.

In another example of a prior art dispensing device, a flexiblecontainer holds a volume of fluid material to be delivered. A singleone-way check valve is provided as an exit port from the flexiblecontainer. When the flexible body is squeezed, the material is urged outunder pressure through the valve.

SUMMARY OF THE INVENTION

The fluid dispensing devices of the prior art suffer from variousdisadvantages that make them difficult and awkward to use withunexpected results. Therefore, there is a need for a fluid dispenserthat is easy to operate and provides the end user with a customizeddosage that they can select. There is a further need for a fluiddispenser that is capable of delivering a metered dose of fluid with anexpected flow upon each dispensing operation for better application ofthe fluid material. There is also a need for a dispenser that is gravityindependent. There is an additional need for the fluid to be capable ofbeing delivered from any point on the surface of container. There is afurther need for a dispenser to include an applicator material for evendistribution and even application of the fluid material, as desired.

The present invention preserves the advantages of prior art dispensingdevices, overcomes many disadvantages of such currently availabledevices, and provides new advantages not found in currently availabledevices.

The invention is generally directed to a novel and unique dispenser fordelivering a customizable metered dose of fluid material upon eachdispensing operation with an optional applicator for even distributionof the dispensed fluid material.

The fluid dispensing system according to the invention includes a fluidcontainer and a fluid dispensing device affixed to the surface of thefluid container. The fluid dispensing device preferably includes ametering housing (sometimes referred to herein as a dosing/controlcollar or base unit), a flexible dosing dome, and a combined meteringdial and dosing button (sometimes referred to herein as meteringdial/dosing button or dial/button). The metering housing is configuredto receive the flexible dosing dome and the metering dial/dosing buttonin a nested fashion, and a dose chamber (also referred to herein as pumpchamber) is formed between the flexible dosing dome and the insidebottom surface of the metering housing. An opening is formed in thebottom surface of the metering housing to serve as a fluid inlet topermit the entry of fluid from the fluid container into the dosechamber. An inlet valve may be positioned inside the dose chamber abovethe opening/fluid inlet to prevent fluid that has entered the dosechamber from returning to the fluid container. A fluid delivery channelis formed in the metering housing between the dose chamber and theoutside surface of the metering housing to permit the delivery of fluidfrom the dose chamber to the desired application point. According to apreferred embodiment, an outlet valve may be placed in the channel or ateither end of the channel to prevent the return of fluid in the fluiddelivery channel to the dose chamber. The metering housing and themetering dial/dosing button are configured with a plurality of nubs andchannels/slots that interact with one-another to constrain the relativemovement of the dial/button and the housing in a predetermined ways,both rotationally, and horizontally. The interplay between the nubs andslots permit the dial/button to be “locked” in such a way that preventsthe dispensing of fluid, and, when the dial/button is rotated to any oneof two or more discrete positions, it allows the dispensing of differentdiscrete amounts of fluids. When the dial/button is in one of thedispensing positions and the dial/button is pressed and then released,fluid from the inside of the fluid container is drawn into the dosingchamber via the fluid inlet opening by vacuum action caused by thereturn of the flexible dosing dome to its original shape after havingbeen deformed by pressing of the metering dial/dosing button. The amountof fluid drawn into the dosing chamber depends on how far thedial/button is depressed, and the distance that the dial/button isdepressed is controlled by the depth of the dose control slotcorresponding to the dose selected by the user by rotation of thedial/button. If, when the dial/button is depressed, fluid is alreadypresent in the dosing chamber, that fluid is forced out through thefluid delivery channel via the outlet valve, prevented from returning tothe fluid container by action of the inlet valve. As with the amount offluid that enters the dosing chamber when the dial/button is released,the amount that is forced out of the dosing chamber into the fluiddelivery channel corresponds to the distance that the dial/button isdepressed, which is controlled by the depth of the dose controlslot/channel corresponding to the dose selected by the user by rotationof the dial/button.

According to an alternate embodiment, the dial/button may be provided intwo or more parts for ease of manufacture. According to one suchalternate embodiment, the dial/button may comprise a first partincluding the inner column, and a second part including the outer columnand the base. According to this embodiment, the flexible dosing dome maybe sealed to the first part, and the first part, with the flexibledosing dome, may then be sealed to the second part.

According to a further embodiment of the invention, the dosing slots maybe provided with downward facing teeth or prongs which prevent the nubthat is traveling in the slots, and hence the dial/button, from movingupward until a full depression has been accomplished. This embodiment isuseful in applications where precise dosing is important and incompletedosing is to be avoided. According to a further embodiment, one or morereturn slots may be provided to allow the dosing dial/button to returnto its resting state under force of the flexible dosing dome returningto its original shape, pulling a new volume of fluid into the dosingchamber from the fluid container by vacuum action. According to thisembodiment, the return slot may be provided with upward facing teeth orprongs to prevent depression of the dial/button when it is returning tothe rest position (i.e., to prevent the return slot from being used as adose slot) and to ensure that a complete new dose is drawn into thedosing chamber. According to this embodiment, once the user hasadministered a full dose, the dial/button may be manually rotated to areturn position so that the dial/button can return to the rest positionunder force of the flexible dosing dome.

It is therefore an object of the present invention to provide a fluiddispensing device that can deliver a user customized equal volume offluid material from each dispensing operation.

It is an object of the present invention to provide a fluid dispensingdevice that is insensitive to gravity.

Another object of the present invention is to provide a fluid dispensingdevice that can deliver fluid flow at any point from the device.

It is a further object of the present invention to provide a fluiddispensing device that can deliver fluid flow at multiple locations fromthe device.

BRIEF DESCRIPTION OF THE DRAWINGS

The subsequent description of the preferred embodiments of the presentinvention refers to the attached drawings, wherein:

FIG. 1a is an exploded perspective view of an adjustable fluid dosingdispenser according to an embodiment of the invention.

FIG. 1b is an alternate rendition of the embodiment shown in FIG. 1 a.

FIG. 1c is a perspective view of an adjustable fluid dosing dispenserdosing collar with an alternative slot design.

FIG. 1d is a bottom perspective view of the dosing dial/button.

FIG. 2 is a bottom perspective view of the dosing/control collar shownin FIG. 1 a.

FIG. 3 is a cross-sectional view of the dosing/control collar shown inFIG. 1 a.

FIG. 4 is a perspective view of a dosing/control collar according to afurther alternative embodiment of the invention.

FIG. 5a is a perspective view of an assembled adjustable fluid dosingdispenser according to an embodiment of the invention in a closed/lockedposition.

FIG. 5b is an alternate rendition of the embodiment shown in FIG. 5 a.

FIG. 6a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention which has been rotated tothe “FULL” dispensing position.

FIG. 6b is an alternate rendition of the embodiment shown in FIG. 6 a.

FIG. 7a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which theactivation/setting button has been released from the locked positionhaving been rotated to the “FULL” dispensing position and the buttonforced upward under force of the flexible dome returning to its originalposition.

FIG. 7b is an alternate rendition of the embodiment shown in FIG. 7 a.

FIG. 8a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which a full dose ofliquid is dispensed when the activation/setting button is in the “FULL”position and then manually depressed.

FIG. 8b is an alternate rendition of the embodiment shown in FIG. 8 a.

FIG. 9a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which a full dose ofliquid has been dispensed upon the manual pressing of theactivation/setting button and in which following activation, the buttonreturns to the “ready” position when the button is released and isforced upwards upon action of the flexible dosing dome.

FIG. 9b is an alternate rendition of the embodiment shown in FIG. 9 a.

FIG. 10a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which theactivation/setting button has been rotated to the half dose position andis in the “ready” position.

FIG. 10b is an alternate rendition of the embodiment shown in FIG. 10 a.

FIG. 11a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which theactivation/setting button is in the half dose position and is dispensinga half dose as the activation/setting button is manually depressed by auser.

FIG. 11b is an alternate rendition of the embodiment shown in FIG. 11 a.

FIG. 12a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which theactivation/setting button is in the half dose position, a half dose hasbeen dispensed, and the activation/setting button has returned to the“ready” position having been released by a user and forced upward by theflexible dosing dome.

FIG. 12b is an alternate rendition of the embodiment shown in FIG. 12 a.

FIG. 13a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention in which theactivation/setting button has been rotated to a “CLOSE” position.

FIG. 13b is an alternate rendition of the embodiment shown in FIG. 13 a.

FIG. 14a is a perspective view of an adjustable fluid dosing dispenseraccording to an embodiment of the invention proximate to a matchingopening in a flexible fluid container.

FIG. 14b is an alternate rendition of the embodiment shown in FIG. 14 a.

FIG. 15a is a perspective view of an adjustable fluid dosing dispenserattached to the surface of a flexible fluid container according to anembodiment of the invention.

FIG. 15b is an alternate rendition of the embodiment shown in FIG. 15 a.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is a device for dispensing fluid from a fluidcontainer, the device capable of being set to different discrete andrepeatable/equal dispensing amounts, depending on the amount of fluidrequired to be dispensed by the user for various applications and uses.The device may also be set to an “off” or “closed” position to preventaccidental dispensing of fluid when not in use. The device is preferablyconfigured to be affixed to the outer surface of a fluid container,which fluid container is preferably a flexible bag or pouch. Accordingto various embodiments, at least one surface of the fluid container or asufficient portion of the fluid container is flexible to allow thecontainer to collapse as fluid is withdrawn therefrom. In the case thatthe entire fluid container is not made of flexible material, thedispensing device is preferably attached to portion of the containerthat is flexible and which is collapsible as fluid is dispensed from thecontainer.

FIGS. 1a-1c show an embodiment of the device including a dosing/controlcollar, a flexible dosing dome, and a combined dose setting dial anddose delivery button. The flexible dosing dome and the dosing/controlcollar, when assembled, form the pump or dosing chamber. Thedosing/control collar is preferably cylindrical in shape with concentricinner and outer annular shafts/columns rising from a common base anddefining a narrow channel between them. The exterior of the outerannular shaft may feature a flange that extends away from the center ofthe shaft. The interior shaft also features a plurality of horizontaland vertical dosing and rotation channels or slots that receive andinteract with corresponding nubs on the outside surface of the dosedial/button. According to an alternative embodiment, the dosing androtation channels may be on the shaft of the dose dial/button and thenubs may be on the outside surface of the inner annular shaft. Thehorizontal slots are the rotation slots and may have a plurality ofdétente locations so that the user can tactically feel the progress ofthe dial as it is being rotated. The vertical channels are the dosingslots and have differing depths (measured from the horizontal slot tothe bottom of the vertical slot) which correspond to differentdispensing amounts. According to a preferred embodiment, each verticalslot in the inner annular shaft is paired with a second vertical slot ofthe same depth, spaced apart on the inner annular shaft, and each nub onthe dose dial button is paired with a second nub spaced apart on thedose/dial button at a location that corresponds to the location of thesecond vertical shaft. When the dial/button is rotated so that a nub onthe exterior of the dial/button lines up with a vertical slot, thebutton can be depressed to dispense fluid. The limit of depressionlimits the amount dispensed, and the depth of the vertical slot limitshow far the button can be depressed because when the nub hits the bottomof the vertical slot, the dial/button is prevented from being depressedany further without breaking the nub, the slot/channel, or both.

According to one embodiment, there is at least one vertical slot or setof vertical slots for a “Full” dose, and there is at least one secondvertical slot or set of vertical slots for a “Half” or “Partial” does.According to other embodiments, there may be a third and fourth verticalslots or sets of vertical slots for other fractional doses, for example,¾ dose, ⅔ dose, ⅓ dose and ¼ dose.

The dosing control collar also features a through-opening in the bottomsurface to accommodate the entry of fluid, fluid inlet valve,represented in FIG. 3 as a flexible flap that is configured to lie overthe through-opening, a fluid outlet on the outside surface of the dosingcontrol collar, and a fluid delivery channel between said fluid inletand said fluid outlet.

According to a further alternative embodiment shown in FIG. 4, thedosing control collar may have separate dosing slots and return slots.According to this embodiment, the dosing slots may have downward facingteeth or prongs which prevent the nubs from traveling upwards, thusrequiring that the dial/button be fully depressed before it returns tothe set position. Since the nubs cannot travel upwards in the dosingslots, separate return slots are provided adjacent the dosing slots,connected by a horizontal slot. The return slots preferably have upwardfacing teeth or prongs to prevent the nubs from traveling downward whilein the return slots.

The dose setting dial/dose delivery button is preferably manufactured ofrelatively rigid plastic having a rigid bottom portion that snaps intothe channel formed between the inner and outer annular shafts of thebase (dosing/control collar).

The dose setting dial/dose delivery button and the dosing/control collarare preferably made of a rigid plastic material. A non-limiting exampleof a material that may be used for the dose setting dial/dose deliverybutton and the dosing/control collar is shown in Appendix 1. Numerousother materials would likewise be suitable as persons of ordinary skillin the art would appreciate. Appendix 1 is provided only to provide areference point for the general properties of the materials that aresuitable for the present invention. Nubs molded to or otherwise formedon the interior surface of the dial/button rest inside the slots formedin the interior shaft. When a user presses the dial/button, thedial/button forces the flexible dosing dome downward to evacuate theinterior volume of the dome via the fluid outlet; when the dial/buttonis released, the flexible dosing dome returns to its original shape,forcing the dial/button upward, and drawing fluid into the interior ofthe dome under vacuum action.

The flexible dosing dome is preferably made of shape memory elastomericmaterial that returns to its original shape after deformation. Anon-limiting example of a material that may be used for the dose settingdial/dose delivery button and the dosing/control collar is shown inAppendix 2. Numerous other materials would likewise be suitable aspersons of ordinary skill in the art would appreciate. Appendix 2 isprovided only to provide a reference point for the general properties ofthe materials that are suitable for the present invention.

FIGS. 5a and 5b show these three parts assembled into an adjustablefluid dispensing device according to the invention in which the flexibledosing dome is sealed to the base inside the interior column of thedosing/control collar and the bottom portion of the dose settingdial/dose delivery button is snapped over the flexible dosing dome intothe channel between the inner and outer shafts. The upper portion of thedial/button projects above the top of the dosing/control collar.According to a preferred embodiment, the perimeter of the upper portionof the dial/button has molded or printed indicia such as “<Open”“Closed” and “FULL” and “HALF” to indicate the rotary position of thedial that corresponds to various functions or dispensing amounts. Eachof these indicia corresponds to a nub/slot combination that permits nodepression, full depression, half depression, or other partialdepression to dispense a corresponding amount of fluid. Likewise, theoutside surface of the outer shaft of the collar preferably has printedor molded or other indicia indicating the location on the collar thatmust be lined up with the appropriate indicia on the dial/button inorder to achieve the desired function. In the configuration shown inFIGS. 5a and 5b , the dial/button is in the fully depressed position,and rotated counterclockwise so that the nubs on the inside surface ofthe dial/button are in the bottom horizontal slot, locking thedial/button into a closed position. According to a preferred embodiment,the bottom horizontal slot has a slight downward slant before becominghorizontal to draw the dial/button down slightly as it is rotated intothe closed position, see FIG. 1c , causing the bottom surface of thedial button to bear down on the fluid delivery channel, pinching itshut. As shown in FIGS. 5a and 5b , the indicia on the collar lines upwith a “<Open” indicia on the button, showing that in order to dispensefluid, the dial/button must be rotated clockwise until the nubs line upwith the “FULL” vertical slot. If the user wishes to dispense only ahalf dose, the dial/button must be rotated clockwise again until thenubs line up with the correspondingly shorter/shallower verticalchannel/slot.

FIGS. 6a and 6b show the dial/button rotated so that the indicia on thecollar lines up with the indicia on the button that says “FULL” and thenubs line up with the deepest vertical slot/channel.

FIGS. 7a and 7b show the dial/button in the same rotational position asin FIG. 3, but after the pressure from the flexible dosing dome hasforced the dial/button up to the dispensing position.

FIGS. 8a and 8b show manual activation of the dial/button in adispensing action. When the button is depressed, the flexible dosingdome is also depressed. When the button is operated for a first time,the interior volume of the dome may be filled only with air or with airand fluid, if fluid has leaked into the pump chamber from the fluidcontainer during filling, shipping and/or storage. Depression of thebutton forces the air or air fluid mixture from the interior volume ofthe dome via the fluid outlet and fluid outlet valve. When the button isreleased, the flexible dosing dome returns to its original shape,forcing the dial/button back to its original position (FIGS. 9a and 9b), and drawing fluid from the fluid container into the interior volumeof the dome via the fluid inlet and fluid inlet valve. Each subsequentdepression of the dial/button dispenses fluid forces fluid out of thedosing chamber of the flexible dosing dome out through the fluid outletvia the fluid delivery channel and fluid outlet valve, thus dispensingfluid. When the button is released, the flexible dosing dome againreturns to its original shape, drawing a fresh amount of fluid into thedosing chamber.

FIGS. 10a and 10b show the dial/button rotated from the “FULL”dispensing location to the “HALF” dispensing location, the nubs in theinside surface of the dial having traveled in the upper horizontalslot/channel from the deep vertical slot/channel to a shallower verticalslot/channel.

FIGS. 11a and 11b show a complete depression of the dial/button in the“HALF” dispensing location. Note that the button cannot be depressed asfar in the “HALF” position as it was in the “FULL” position (FIGS. 8aand 8b ) because the nub(s) hit the bottom of the shallower verticalslot(s). FIGS. 11a and 11b show a correspondingly smaller amountdispensed as compared to the FULL dose dispensed in FIGS. 8a and 8 b.

FIGS. 12a and 12b show the dial/button returned to the rest positionafter it has been released, under the force of the flexible dosing domewhich returns to its original shape when not under a load.

FIGS. 13a and 13b show the dial rotated to an internal product shut offlocation so that the nub(s)s are in the upper horizontalchannel(s)/slot(s), but do not line up with any of the vertical slots.In this location, the button is prevented from accidentalactivation/dispensing.

FIGS. 14a and 14b show the adjustable metering device of the inventionabout to be connected to a flexible fluid container, preferably a bag orpouch. According to a preferred embodiment, the fluid container iscollapsible as fluid is dispensed therefrom and preferably contains noair. According to one embodiment, the bottom of the adjustable meteringdevice has an adhesive that makes a secure and air-tight connection tothe fluid container. According to a further embodiment, the adhesive maybe covered prior to use with a thin pull-away film to protect andpreserve the adhesive until it is time to connect the device to thefluid container. According to various alternative embodiments, thebottom of the adjustable metering device may be heat welded to the fluidcontainer, sonic welded to the fluid container or sealed to the fluidcontainer in any other known method. According to a further embodiment,the fluid container may have a reinforced region and/or treated surfacethat corresponds to the shape and size of the device to facilitatestrong and secure connection and prevent container breaking or tearingshould a force or load be applied to the device after it has beenattached to the fluid container.

FIGS. 15a and 15b show an adjustable metering device of the inventionconnected to a flexible fluid container. The device can be operated todispense fluid no matter the orientation of the device in space, as itis agnostic to gravity or other forces except for the depression of thedial/button.

According to a preferred embodiment, the bottom of the device may beprovided with a self-piercing feature that pierces the fluid containerat the same time that the device is affixed to the outside of thecontainer, creating fluid communication between the fluid in thecontainer and the fluid inlet of the device with ease and without mess.

The invention claimed is:
 1. A fluid dispensing device, comprising: agenerally cylindrical rigid base unit having a generally flat andcontinuous bottom surface and a top surface having concentric inner andouter columns thereon defining a channel there-between and a center areainside the perimeter of said inner column; a flexible dome manufacturedfrom a shape memory material and configured to fit inside the centerarea of said base unit to form a pump chamber; said bottom surface ofsaid base unit having a fluid inlet opening to said pump chamber topermit the flow of fluid there-through; said device further comprising acombination dial and button having the shape of a cylinder with a closedtop and an open bottom, a bottom portion of said combination dial andbutton configured to fit inside the channel defined by said twoconcentric columns; said inner column and a bottom portion of saidcombination dial and button having complementarily located nubs andslots, the nubs configured to rest in and travel within said slots toconstrain the rotational and vertical movement of said combination dialand button in said channel; said base also defining a fluid deliverychannel between said pump chamber and a fluid delivery outlet opening onan outside surface of said base unit; said closed top of saidcombination dial and button being constructed of material that issufficiently flexible so that upon receiving of a load from above, thetop of said combination dial and button can be forced down onto saidflexible dome in turn forcing said flexible dome downward, forcingcontents of said pump chamber into said fluid delivery channel.
 2. Thefluid dispensing device according to claim 1, further comprising auni-directional fluid flow valve associated with said fluid inletopening to prevent the flow of fluid through said inlet opening whensaid combination dial and button is being pressed.
 3. The fluiddispensing device according to claim 1, further comprising auni-directional fluid flow valve associated with said fluid deliverychannel to prevent flow of fluid into said pump chamber by way of vacuumforce when said flexible dome has been depressed and is returning to anoriginal shape due to shape memory.
 4. The fluid dispensing deviceaccording to claim 1, where said nubs are situated on an inside surfaceof said combination dial and button, and where said slots are situatedon said inner column.
 5. The fluid dispensing device according to claim1, where said nubs are situated on an inside surface of said innercolumn, and where said slots are in said combination dial and button. 6.The fluid dispensing device according to claim 1, wherein said slotscomprise a first vertical slot and a second vertical slot connected at atop end of said first and second vertical slots by a horizontal slot,said first slot having a height that is different from a height of saidsecond slot, said height being measured from said horizontal slot. 7.The fluid dispensing device according to claim 6 further comprising asecond horizontal slot, said second horizontal slot connected at abottom of one of said first and second slots.
 8. The fluid dispensingdevice according to claim 6, further comprising a downward slanting slotconnected at a bottom of one of said first and second slots, saiddownward sloping slot terminating at a second horizontal slot.
 9. Thefluid dispensing device according to claim 8, having a configurationsuch that when a nub has been delivered to said second horizontal slotby pressing and rotating of said combination dial and button, a bottomsurface of said combination dial and button is drawn down on to a bottomof said channel, causing said fluid delivery channel to be pinched shut.10. The fluid dispensing device according to claim 1, said channelscomprising a plurality of vertical dosing channels having downwardfacing prongs that prevent upward movement of the nubs in said dosingchannels, each of said vertical dosing channels connected at a bottom toan associated vertical return channel having upward facing prongs thatinhibit downward movement of the nubs in said vertical return channels.